EP3093579A1 - Chaudière à condensation - Google Patents

Chaudière à condensation Download PDF

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Publication number
EP3093579A1
EP3093579A1 EP16168903.9A EP16168903A EP3093579A1 EP 3093579 A1 EP3093579 A1 EP 3093579A1 EP 16168903 A EP16168903 A EP 16168903A EP 3093579 A1 EP3093579 A1 EP 3093579A1
Authority
EP
European Patent Office
Prior art keywords
fumes
collection chamber
chamber
fume collection
fume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16168903.9A
Other languages
German (de)
English (en)
Inventor
Giovanni Pisani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ICI Caldaie SpA
Original Assignee
ICI Caldaie SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ICI Caldaie SpA filed Critical ICI Caldaie SpA
Publication of EP3093579A1 publication Critical patent/EP3093579A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0036—Dispositions against condensation of combustion products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F24H1/263—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body with a dry-wall combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
    • F24H1/285—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with the fire tubes arranged alongside the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40
    • F24H1/445—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40 with integrated flue gas condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F24H9/0021—Sleeves surrounding heating elements or heating pipes, e.g. pipes filled with heat transfer fluid, for guiding heated liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
    • F28D9/0018—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form without any annular circulation of the heat exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F24D2200/18—Flue gas recuperation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the present invention relates to a condensing boiler.
  • condensing boilers have an outer enclosure that defines a chamber containing the water to be heated and which accommodates internally a burner constituted by a combustion chamber associated with a burner and connected to a plurality of fume tubes, which exchange heat with the water to be heated, in order to allow the transmission of sensible heat and latent heat from the fumes to the water, and which lead into a fume collection chamber connected to a stack.
  • a condensing device usually constituted by a coil, inside which water passes through and outside which the fumes flow over, the function of which is to also recover the latent heat from any residual water vapor in the fumes exiting from the fume tubes.
  • the aim of the present invention is to provide a condensing boiler that is capable of reaching high yield levels by way of recovering most of the latent heat available in the combustion fumes.
  • Another object of the present invention is to provide a condensing boiler that has a condensing device which for the same space occupation with respect to conventional condensing devices has a greater heat exchange surface.
  • Another object of the present invention is to provide a condensing boiler that is simple to provide in terms of construction, so that it can be competitive from a merely economic viewpoint as well.
  • a condensing boiler generally indicated with the reference numeral 1, comprises an outer enclosure 2, for example substantially cylindrical, inside which is defined a chamber 3 for containing the water to be heated.
  • the containment chamber 3 is provided with an inlet 3a, which can be connected to a duct 5 for the return of cold water, originating for example from a heating system or from the water mains, and an outlet 3b, which can be connected to a duct 6 for the delivery of hot water, which arrives, for example, in the heating system or in the household water system.
  • the combustion chamber 7 is, for example, delimited laterally by a cylindrical wall 9, which separates it from the chamber 3 containing the water to be heated, and is, conveniently, positioned substantially coaxially to the outer enclosure 2.
  • the burner 8 is, conveniently, arranged at one longitudinal end 7a of the combustion chamber 7, which, at its opposite end, is closed by a deflection wall 7b which deflects the fumes produced by the flame generated by the burner 8, so as to make them turn toward the end 7a of the combustion chamber where the burner 8 is located.
  • a tubular element 10 positioned substantially coaxial to the burner 8, which laterally confines the flame produced by the burner 8 and defines, with the cylindrical wall 9, an annular interspace 11, into which the fumes redirected by the deflection wall 7b are channeled and directed toward the end 7a of the combustion chamber 7.
  • the tubular element 10 can, advantageously, have a corrugated shape structure in order to increase the turbulence of the fumes.
  • the combustion chamber 7 is connected to a plurality of heat exchange tubes 12, which pass through the containment chamber 3 and lead, with an outlet end 12a thereof, into a fume collection chamber 13, which is, conveniently, arranged, with respect to the chamber 3 for containing the water to be heated, at the opposite end to the burner 8. While the fumes flow over the heat exchange tubes 12 they transfer sensible heat and part of the latent heat to the water present in the containment chamber 3.
  • the combustion chamber 7 has, for example, one or more ports 13 which are connected with a fume redirection chamber 14, which channels the fumes into the heat exchange tubes 12 and is defined, substantially, between a delimiting end wall 15 of the chamber 3 containing the water to be heated and a door 16, which is passed through, axially, by the burner 8 and can be opened in order to allow inspection of the combustion chamber.
  • a fume redirection chamber 14 which channels the fumes into the heat exchange tubes 12 and is defined, substantially, between a delimiting end wall 15 of the chamber 3 containing the water to be heated and a door 16, which is passed through, axially, by the burner 8 and can be opened in order to allow inspection of the combustion chamber.
  • the collection chamber 13 for the fumes originating from the heat exchange tubes 12 is substantially cylindrical and is connected to a stack 17 for evacuating the fumes to outside the boiler.
  • a condensing device 18 for the fumes arriving in the fume collection chamber 13, which makes it possible to recover any residual latent heat in the fumes before they exit into the atmosphere through the stack 17.
  • the stack 17 is provided with an intake 17a which is arranged substantially coaxially to the fume collection chamber 13.
  • the condensing device 18 comprises at least one fume cooling element 19 which is substantially annular and is arranged substantially coaxially to the fume collection chamber 13 in order to be skimmed radially, on its outer surface, by a flow of fumes that arrive from the heat exchange tubes 12 and are directed toward the intake 17a of the stack 17.
  • the (or each) cooling element 19 is substantially a self-contained closed loop and, more precisely, substantially toroidal or "doughnut” shaped with its axis arranged substantially coaxially to the axis of the fume collection chamber 13.
  • the condensing device 18 has a plurality of cooling elements 19 which are arranged so as to face each other and are substantially mutually coaxial, so as to define, between the cooling elements 19, a plurality of regions 20 for channeling the fumes each one of which is intended to be crossed radially by a flow of the fumes that is directed from the outer perimetric edge 19a of the cooling elements 19 toward the axis of the fume collection chamber 13.
  • each cooling element 19 defined inside each cooling element 19 is a flow cavity 21 for a heat exchange fluid, which makes it possible to exchange heat with the fumes that brush against the cooling elements 19 so as to recover at least some of the residual latent heat.
  • each cooling element 19 has, conveniently in the lower part thereof, at least one intake port 22a which is connected with its flow cavity 21 and is connected, by way of a bypass duct 23, to the cold water return duct 5 and, in the upper part thereof, at least one outlet port 22b, which is connected to the containment chamber 3, in order to enable the water that has entered the flow cavity 21 of the cooling elements 19 and been heated by the combustion fumes arrived in the fume collection chamber 13 to reach, in turn, through the containment chamber 3, the hot water delivery duct 6.
  • the outlet ends 12a of the heat exchange tubes 12 are distributed around the axis of the fume collection chamber 13 along a circumference and the outer perimetric edge 19a of the cooling elements 19 has a smaller diameter than the circumference along which the outlet ends 12a of the heat exchange tubes 12 are distributed, so as to ensure the radial flow of the fumes from the heat exchange tubes 12 to the stack 17 through the channeling regions 20 defined between the cooling elements 19.
  • the cooling elements 19 define axially a channel 23 for merging the flows of the fumes that pass through the channeling regions 20, which is facing the intake 17a of the stack 17 and laterally delimited by the inner perimetric edges of the cooling elements 19.
  • each one of the cooling elements 19 is connected, with its intake port 22a, to an intake manifold 25, by way of a respective intake duct 25a, and, with its outlet port 22b, to an outlet manifold 26, by way of a respective discharge duct 26a.
  • the intake manifold 25 is connected to the bypass duct 23, while the outlet manifold 26 is connected to a connecting duct 27 which leads into the containment chamber 3.
  • the intake ducts 25a and the discharge ducts 26a pass through a wall of the fume collection chamber 13, passing through adapted openings in which there are, advantageously, sealing gaskets 31 which prevent the egress of the fumes from such collection chamber.
  • the set of cooling elements 19 there can be, between the set of cooling elements 19 and the walls arranged at the axial ends of the fume collection chamber 13, two circular gaskets 32 which prevent the fumes from flowing directly toward the stack 17 without passing through the channeling regions 20 defined between pairs of cooling elements 19.
  • the cooling elements 19 have, in the axial direction, a substantially flattened shape structure.
  • the cooling elements 19 have, conveniently, a narrowed portion 19c proximate to their outer perimetric edge 19a and an enlarged portion 19d proximate to the corresponding inner perimetric edge 19b, so as to create a variation in the passage cross-section of the channeling regions 20 that produces a variation in speed of the radial flows of fumes that pass through them, with an increase in the turbulence and, therefore, in the heat exchange coefficient of the fumes.
  • cooling elements 19 can be, advantageously, made from a respective pair of annular and mutually facing plates 28.
  • Each one of the plates 28 has, at points that are mutually diametrically opposite, tabs 29a and 29b, which protrude from the outer perimetric edge.
  • the respective plates 28 are first mutually welded at their inner and outer perimetric edges, at the edges of their tabs 29a and 29b and in localized points 30 of their surface and, subsequently, they are deformed by inflation by way of a pressurized gas that is blown into the space present between the plates 28 through the intake ports 22a and/or the outlet ports 22b, which were previously provided.
  • the cold water originating from the return duct 5 enters the containment chamber 3 through the inlet 3 a.
  • the burner 8 generates a flame that extends inside the tubular element 10, producing combustion fumes that flow through the combustion chamber until they reach the deflection wall 17b, which redirects them and channels them along the annular interspace 11, so that they can begin to exchange heat with the water present in the containment chamber 3.
  • combustion fumes flow over the heat exchange tubes 12, they transfer not only sensible heat but also some of the latent heat to the water contained in the containment chamber 3.
  • the water thus heated exits the containment chamber 3 from the outlet 3b and enters the delivery duct 6.
  • the flow cavity 21 defined inside the cooling elements 19 receives, through the corresponding intake duct 25a connected to its intake port 22a, cold water originating from the return duct 5, by way of the bypass duct 23 and the intake manifold 25.
  • the combustion fumes transfer any residual latent heat to the water that is flowing inside the flow cavity 21 of the cooling elements 19.
  • the fumes After flowing through the channeling regions 20, the fumes enter the merging channel 23, through which they reach the intake 17a of the stack 17, so that they can be evacuated into the atmosphere.
  • the water that flows through the flow cavity 21 of the cooling elements 19 and which is heated by the residual latent heat transferred from the combustion fumes exits from the cooling elements 19 through the relative outlet ports 22b and reaches, by way of the discharge ducts 26a, the outlet manifold 26, from which it is sent, by way of connecting duct 27, into the containment chamber 3, so as to be reunited with the water fed by the return duct 5.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP16168903.9A 2015-05-12 2016-05-10 Chaudière à condensation Withdrawn EP3093579A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVR20150081 2015-05-12

Publications (1)

Publication Number Publication Date
EP3093579A1 true EP3093579A1 (fr) 2016-11-16

Family

ID=53794455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16168903.9A Withdrawn EP3093579A1 (fr) 2015-05-12 2016-05-10 Chaudière à condensation

Country Status (2)

Country Link
US (1) US20160334137A1 (fr)
EP (1) EP3093579A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107421110A (zh) * 2017-08-18 2017-12-01 德清县德沃工业设备安装有限公司 一种燃气锅炉
CN111023569A (zh) * 2019-11-07 2020-04-17 赵素真 一种循环冷凝锅炉
CN114392578A (zh) * 2022-02-14 2022-04-26 马传钊 一种锅炉冷凝水回收设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2842557C (fr) * 2013-02-12 2024-01-02 Lester James Thiessen Echangeur thermique de tube de bruleur pour reservoir de stockage
US20140245972A1 (en) * 2013-02-12 2014-09-04 Lester James Thiessen Heat Exchanger for an Oil Storage Tank
US20170350589A1 (en) * 2016-06-07 2017-12-07 Cleaver-Brooks, Inc. Burner with Adjustable End Cap and Method of Operating Same
GB2552523B (en) * 2016-07-28 2020-12-30 Bkbd Ltd Condensing boiler
IT201700106691A1 (it) * 2017-09-25 2019-03-25 I C I Caldaie S P A Caldaia.
CN109084478A (zh) * 2018-09-27 2018-12-25 山西崇光科技有限公司 一种用于解决冷凝锅炉烟气回流的烟气止回装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413968A1 (de) * 1984-03-31 1985-10-10 Didier-Werke Ag, 6200 Wiesbaden Vorrichtung zur verbrennungsunterstuetzung fuer einen oel- oder gasbrenner
FR2565334A1 (fr) * 1984-06-01 1985-12-06 Deleage Sa Chaudiere a condensation par voie seche
EP1899654A1 (fr) * 2006-01-11 2008-03-19 Viessmann Werke GmbH & Co. KG Chaudière de chauffage

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Publication number Priority date Publication date Assignee Title
US3838975A (en) * 1973-05-18 1974-10-01 Universal Oil Prod Co Thermal incinerator with heat recuperation
DE4207500C2 (de) * 1992-03-10 1995-04-20 Zeljko Dipl Ing Varga Heizkessel mit verringerter NO¶x¶-Emission
US9353967B2 (en) * 2010-02-03 2016-05-31 Farshid Ahmady Fluid heating apparatus
KR101199621B1 (ko) * 2010-08-12 2012-11-08 주식회사 경동나비엔 콘덴싱 보일러

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413968A1 (de) * 1984-03-31 1985-10-10 Didier-Werke Ag, 6200 Wiesbaden Vorrichtung zur verbrennungsunterstuetzung fuer einen oel- oder gasbrenner
FR2565334A1 (fr) * 1984-06-01 1985-12-06 Deleage Sa Chaudiere a condensation par voie seche
EP1899654A1 (fr) * 2006-01-11 2008-03-19 Viessmann Werke GmbH & Co. KG Chaudière de chauffage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107421110A (zh) * 2017-08-18 2017-12-01 德清县德沃工业设备安装有限公司 一种燃气锅炉
CN111023569A (zh) * 2019-11-07 2020-04-17 赵素真 一种循环冷凝锅炉
CN114392578A (zh) * 2022-02-14 2022-04-26 马传钊 一种锅炉冷凝水回收设备

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Publication number Publication date
US20160334137A1 (en) 2016-11-17

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